package com.sky.service.impl;


import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.Collections;
import java.util.List;

@Slf4j
@Service
public class SetmealServiceImpl implements SetmealService {



    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Transactional
    @Override
    public void insertSetmeal(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.insertSetmeal(setmeal);
        List<SetmealDish> setmealDishList = setmealDTO.getSetmealDishes();
        Long setmealId = setmeal.getId();
        if (setmealDishList != null && setmealDishList.size() != 0){
            for (SetmealDish setmealDish : setmealDishList) {
                setmealDish.setSetmealId(setmealId);
            }
        }
        setmealDishMapper.insertSetmeal(setmealDishList);


    }

    @Override
    public PageResult pageSetmeal(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page = setmealMapper.pageSetmeal(setmealPageQueryDTO);



        return new PageResult(page.getTotal(),page.getResult());
    }

    @Transactional
    @Override
    public void deleteSetmeal(List<Long> ids) {
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.getById(id);
            if (setmeal.getStatus() == StatusConstant.ENABLE) {
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }

        setmealMapper.deleteByIds(ids);
        setmealDishMapper.deleteBySetmealIds(ids);

    }

    @Transactional
    @Override
    public SetmealVO getById(Long id) {
        SetmealVO setmealVO = new SetmealVO();
        Setmeal setmeal = setmealMapper.getById(id);
        BeanUtils.copyProperties(setmeal,setmealVO);
        setmealVO.setSetmealDishes(setmealDishMapper.getBySetmealId(id));
        return setmealVO;
    }

    @Transactional
    @Override
    public void updateSetmeal(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.updateSetmeal(setmeal);
        setmealDishMapper.deleteBySetmealIds(Collections.singletonList(setmealDTO.getId()));
        List<SetmealDish> setmealDishList = setmealDTO.getSetmealDishes();
        if (setmealDishList != null && setmealDishList.size() != 0){
            for (SetmealDish setmealDish : setmealDishList) {
                setmealDish.setSetmealId(setmeal.getId());
            }
        }
        setmealDishMapper.insertSetmeal(setmealDishList);
    }

    @Override
    public void updateStatus(Integer status, Long id) {
        Setmeal setmeal = new Setmeal();
        setmeal.setStatus(status);
        setmeal.setId(id);
        if (status == StatusConstant.ENABLE ){
            List<Dish> dishList = dishMapper.getBySetmealId(id);
            if(dishList != null && dishList.size() > 0){
                dishList.forEach(dish -> {
                    if(StatusConstant.DISABLE == dish.getStatus()){
                        throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                    }
                });
            }
        }
        setmealMapper.updateStatus(setmeal);
    }


    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
